Pulverized-fuel-burning device



l. VDICKSNI PuLvEmzED FUEL BURNING DEVICE.

APPLICATION FILED )ULY28, 19.17. 31934599 @Algo Patented Aug. M9192@ A 2 SHEETS-SHEET l.

J. DICKSON. P'uLvElzED FUEL BURNING DEVICE.

APPLICATION FILED JULY 28, 1917.

.- nuit PATENT FFQE.

'JOHN piensen, or veivconvnn, wrist-inversa.

r'ULvnnIZnn-FUEL-:sunnme p nvicn.

ineens.

Application sied July 2e, naiv.' 4serial ivo. 183,341.

To all whom t may concern.'

Beit known that, JOHN DionsoN, a citizen of the/ United States, and a resident of Vancouver, in the county of Clarke and;

State of'Washingt-on, have invented a ceralin newand useful `Tmprovement inl lul- 'veried-Fuel-Burning Devices, of Awhich the following is a specification.'V

My invention `relates to improvements-iin.

devices for burning pulverized fuel, and more especially to devices for enabling locomotive engines tov make use ofpulverized fuel, -land it consists. in theV combinations, constructions, ,and arrangements herein described and claimed. v

- An object of my invention istoT-irovide4 y a device by means of whichpulverized vfuel may be so 'introduced into the combustion chamber offa locomotive or other fuel burn- Aing apparatus that the fuelis substantially consumed,leaving ajrelativelyl small :amount giving ainaXimum quantity ,of

stream bf heated air, theta-ir aiding ing complete combustion. further object f-of my inventio provide a novel form of burner',y device in Awhich the burner is introduced at theifront end of the ire boXand a iame is projected to therear` end of the same.

l'iitherobject of my-,inveiitioni thus utilizing the exhaust gases to heat the 'v novelfeatures of the invention will be part'icularly pointed out in thel appended claims. My invention is illustrated in the accom-` panying drawings forming@ of this application, and in which: 4Figure l is ageneral plan view of the f apparatus A Fig'. 2 is a side view'of the general arrangement, certain parts being-shown in section and other parts'being omitted for the sake of clearness;

v-F ig. 3 is a sectional view of aconveyen and a portion of the blower system riga is a plan view of the parts'shovn 11i Fig; 3;

i pi e 22.

Visposed 'provide anekpansion airv tank which is'l ocated-'in the' 'smoke box of the locomotive,

ig. 6 is a detail view7 of a portion of certain air pipes, showing their manner of connection.

In carrying out my invention T may make use of a locomotive engine, such as shown at A in Fig. 2, and the tender B. At' l T have indicated in general the fire box or combustion chamber of the locomotive. This consists of a chamber which is preferably rlined with heat resisting material, having at the rear end an opening 2 for the admission of air?a Disposed at the front ofI the fire box is a burner'nozzle 3 which is con-l nected with a pipe bent downwardly and, rearwardly and extending toward the tender.A This pipe is provided with a flexible hose connection 5 and a 'discharge nozzlef, from which the pipe et receives fuel.

The pul'verized fuel is carried in a hopper Z on the tender. This hopper consists Vof acasiiig having a sloping bottom 8 lead- `ing toward a conveyer casing 9, the latter veyer :casing 9 communicates with the discharge nozzle 6 by means of an inclined .a es in the Smoke box e4. of

tlieiflocomotivesis a tank having apipe 25- extending rearwardly and, connectingwith thenozzle 6 at 25X, see Figs. 3 and 4. The

,opposite side ...of the tank 23 is provided a pipe`26-which communicates with an air ftank 27 on the tender. A'pipe 28 leads from the air tank 27 to the airpump 29 on the engine. The" pipe 25, it will bei'observed, has a 'series of pipesO connecting the pipe YV`25fwith the pipe 4, these pipes. SO-being inclined in suchI` manner as to facilitate the ow of air through the pipe 4:. in the manner hereinafter eiiplained. Y

From the foregoing description of thevarious parts of the device, the operation thereof may be readily understood. f

`The hopper gislled with pulverized duel,` such as pnlverized. coal. tends to move toward the conveyer casing 9.

The fuel This casing hasan openin'g'9* vat its top, see Figs. 1 and gjlior permitting-the fuel td iio enter into the casing. By manipulating the valve 2l, see Fig. 2, steam 'may be admitted through the pipe 20to the motor M,. and

the conveyer is thereby operated, and thecoal is caused t o pass forwardly down through the pipe 22 and into the discharge y, nozzle 6.

In the meantime the airpump 29 issupplying the tank 27 with compressed air, this air passing through the pipe 28. The 'air passes from tlietank 27 through the pipe A26 to the rtank 23, .where the air is heated' and caused to -expand and it returns from the tank 23 by the pipe 25 which connects with the nozzle 6, as hereinafter explained, this air being iinder'rel'atively low pressure. The pressure is sul'icient, however, to carry the coal forwardly, the carrying action being boosted or assisted by. streams of warmair directed through pipes 30. The mixture 4of warm air and pulverized fuel is ignited by placing -a piece of burning waste to the mouth of the burner nozzle 3. The exhaust of the cylinders creates a vac- 'uum in the smoke box of the locomotive,

and this forces the hot gases and products of combustion from the fire 'box through the flue into the smoke box, thus heating nace having exhaust gases which could be v vdeliversrair from the air tank27 to the expansion tank -23 is controlled by means pf a valve l31 on the engine.

While I have shown the device as beingapplied. to a locomotive engine, 'it will be understood that it may be used on any furutilized to heatl an expansion air tank.

I claim:

1. A device for feeding pulveri'zed. fuel comprising a tender having a fuel hopper, a locomotive engine having a fire box, a

, burner nozzle disposed at the front of the re box and directed toward the rear, va fuel Y is delivered to the burner nozzle, auxiliary air pipesconnected with said fuel pipe, said air pipes being directed to assist in the travel of the fuel, means for heating the air prior toits delivery to said discharge nozzle and to said fuel pipe, said last named means comprising a tank disposed in the smoke 'd boirof the locomotive, and means for forcing air through said tank.

2." A device foi` feeding pulverized fuel, comprising a tender having a fuel hopper, a locomotive engine having a ire box, a burner nozzle disposed at the front of the fire box and directed toward the rear, a fuel -pipe connected with said burner nozzle and extending rearwardly toward the tender, a nozzle discharging into said pipe and cai'- ried by the tender, means for introducing compressed air into Said-discharge nozzle, connections l between said discharge nozzle and said fuel hopper for introducing fuel yinto saiddischarge-nozzle' whereby the fuel is delivered'to'the .burner nozzle, auxiliary air pipes connected with said fuel pipe for 'assisting the travel of the fuel, means for heating the air prior to its delivery to said discharge nozzle, said last named means comprising a tank disposed inthe smoke box of the locomotive, and an air 'pump car- `ried bythe locomotive and communicating with said tank.

- JOHN Dicxsonl Witnesses: y l

- J oHN `WILKINsoN,

L. C. MGCOY. 

